:root{
  --bg:#1a140f;
  --bg-2:#241b12;
  --parchment:#e8d9b5;
  --parchment-2:#f2e8cf;
  --ink:#2b2118;
  --bronze:#b0854a;
  --bronze-2:#8a6534;
  --ember:#d14f2f;
  --muted:#9a8f78;
  --shadow:0 10px 30px rgba(0,0,0,.55);
  --radius:10px;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--parchment);
  background:
    radial-gradient(1200px 600px at 50% -10%, #3a2c1c 0%, transparent 60%),
    radial-gradient(900px 500px at 50% 120%, #2a1d12 0%, transparent 55%),
    var(--bg);
  -webkit-tap-highlight-color:transparent;
}
/* 微弱羊皮纸纹理 */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
#app{position:relative;z-index:1;max-width:760px;margin:0 auto;padding:0 14px calc(24px + env(safe-area-inset-bottom))}

.topbar{
  position:sticky;top:0;z-index:20;max-width:760px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px;background:linear-gradient(180deg,rgba(26,20,15,.95),rgba(26,20,15,.75));
  backdrop-filter:blur(6px);border-bottom:1px solid rgba(176,133,74,.25);
}
.topbar-title{font-family:var(--serif);font-size:18px;letter-spacing:2px;color:var(--parchment);text-shadow:0 0 12px rgba(209,79,47,.35)}
.topbar-right{display:flex;align-items:center;gap:8px}
.model-badge{
  font-family:var(--serif);font-size:12px;letter-spacing:1px;cursor:pointer;
  padding:5px 10px;border-radius:20px;border:1px solid var(--bronze);
  background:rgba(176,133,74,.12);color:var(--bronze);transition:.2s;
}
.model-badge[data-model="flash"]{border-color:var(--ember);color:var(--ember)}
.user-label{font-size:12px;color:var(--muted);max-width:70px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ghost-btn{
  background:none;border:1px solid rgba(176,133,74,.4);color:var(--parchment);
  padding:5px 10px;border-radius:8px;font-size:12px;cursor:pointer;font-family:var(--serif);letter-spacing:1px;
  transition:.18s;
}
.ghost-btn:active{transform:scale(.96);background:rgba(176,133,74,.12)}

.view{animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.hidden{display:none!important}

/* 登录卡 */
.auth-card{
  margin:8vh auto 0;padding:34px 26px;text-align:center;border-radius:var(--radius);
  background:linear-gradient(180deg,var(--bg-2),#1c150e);border:1px solid rgba(176,133,74,.3);
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.auth-card::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(360px 160px at 50% 0%,rgba(209,79,47,.18),transparent 70%)}
.crest{font-size:46px;color:var(--ember);text-shadow:0 0 24px rgba(209,79,47,.6);margin:0 0 6px}
.auth-title{font-family:var(--serif);font-size:28px;letter-spacing:6px;margin:0 0 4px}
.auth-sub{color:var(--muted);font-size:13px;margin:0 0 22px}
.field{display:block;margin:14px 0;text-align:left}
.field span{display:block;font-size:12px;color:var(--muted);letter-spacing:2px;margin-bottom:6px}
.field input{
  width:100%;padding:12px 14px;font-size:16px;color:var(--ink);
  background:var(--parchment-2);border:none;border-radius:8px;font-family:var(--serif);
  box-shadow:inset 0 2px 6px rgba(0,0,0,.15);
}
.field input::placeholder{color:#8a7c5f}
.primary-btn{
  width:100%;padding:13px;font-family:var(--serif);font-size:16px;letter-spacing:3px;cursor:pointer;
  color:#1a140f;background:linear-gradient(180deg,var(--bronze),var(--bronze-2));
  border:none;border-radius:8px;margin-top:10px;font-weight:600;
  box-shadow:0 4px 14px rgba(209,79,47,.35);transition:.18s;
}
.primary-btn:active{transform:translateY(1px)}
.send-btn{width:auto;padding:0 22px;margin:0;letter-spacing:2px}
.err{color:var(--ember);font-size:13px;min-height:18px;margin:12px 0 0}

/* 大厅 */
.hall-head{padding:26px 4px 14px}
.hall-title{font-family:var(--serif);font-size:24px;letter-spacing:4px;margin:0 0 4px;color:var(--parchment)}
.hall-sub{color:var(--muted);font-size:13px;margin:0}
.scene-list{display:grid;gap:14px}
.scene-card{
  display:flex;gap:14px;align-items:flex-start;padding:18px;border-radius:var(--radius);
  background:linear-gradient(180deg,var(--bg-2),#1d160f);border:1px solid rgba(176,133,74,.25);
  cursor:pointer;position:relative;overflow:hidden;transition:.18s;
}
.scene-card:active{transform:scale(.99)}
.scene-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(var(--bronze),var(--ember))}
.scene-crest{font-size:30px;color:var(--bronze);line-height:1;flex:none}
.scene-meta{flex:1;min-width:0}
.scene-title{font-family:var(--serif);font-size:19px;letter-spacing:2px;margin:0 0 3px}
.scene-tagline{color:var(--muted);font-size:12px;margin:0 0 10px}
.scene-progress{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}
.save-dot{width:7px;height:7px;border-radius:50%;background:var(--bronze);box-shadow:0 0 8px rgba(176,133,74,.6)}
.save-dot.new{background:#555;box-shadow:none}
.save-text{letter-spacing:1px}

/* 游戏 */
.game-head{display:flex;align-items:center;justify-content:space-between;padding:14px 2px 10px;position:sticky;top:52px;z-index:10;background:linear-gradient(180deg,var(--bg) 70%,transparent)}
.game-title{font-family:var(--serif);font-size:17px;letter-spacing:2px;color:var(--parchment);text-align:center;flex:1;padding:0 6px}
.transcript{display:flex;flex-direction:column;gap:12px;padding:6px 0}
.msg{max-width:88%;padding:12px 15px;border-radius:14px;font-size:15px;line-height:1.7;font-family:var(--serif);animation:fade .25s ease}
.msg.ai{align-self:flex-start;background:linear-gradient(180deg,var(--bg-2),#1e1710);border:1px solid rgba(176,133,74,.2);color:var(--parchment);border-bottom-left-radius:4px}
.msg.ai::before{content:"叙事者";display:block;font-size:11px;letter-spacing:2px;color:var(--bronze);margin-bottom:6px}
.msg.me{align-self:flex-end;background:linear-gradient(180deg,#3a2c1a,#2c2014);border:1px solid rgba(176,133,74,.35);color:var(--parchment-2);border-bottom-right-radius:4px}
.msg.me::before{content:"你";display:block;font-size:11px;letter-spacing:2px;color:var(--muted);margin-bottom:6px;text-align:right}
.msg .txt{white-space:pre-wrap;word-break:break-word}
.msg .txt p{margin:0 0 10px}
.msg .txt p:last-child{margin-bottom:0}

.choices{display:grid;gap:8px;padding:4px 0}
.choice{
  text-align:left;padding:12px 14px;border-radius:10px;font-size:14px;line-height:1.5;cursor:pointer;
  background:rgba(176,133,74,.08);border:1px solid rgba(176,133,74,.3);color:var(--parchment);
  font-family:var(--serif);letter-spacing:.5px;transition:.15s;
}
.choice:active{transform:scale(.98);background:rgba(209,79,47,.14);border-color:var(--ember)}
.choice .k{color:var(--ember);font-weight:600;margin-right:6px}

.input-form{display:flex;gap:10px;padding:14px 0 6px}
.input{
  flex:1;padding:13px 15px;font-size:15px;color:var(--ink);background:var(--parchment-2);
  border:none;border-radius:10px;font-family:var(--serif);box-shadow:inset 0 2px 5px rgba(0,0,0,.12);
}
.busy{color:var(--muted);font-size:13px;font-family:var(--serif);letter-spacing:1px;padding:8px 2px;min-height:18px}

@media (max-width:520px){
  .msg{max-width:94%}
  .topbar-title{font-size:16px}
}